Erm, you also could try this:
Download Auto Gordian Knot (signature)
Insert the DVD - start Auto GK
Step 2, select the Track you wanted
Step 3, choose 700 mb
Step 4, Advanced Settings: Audio - VBR MP3, kbps: 128
outputfile, where you want to save your video
Now add job and start job.
This will take some time depending on your system (2-6 hours)
Now, go to the folder where you saved the output file and there is a folder "gk_tmp" (for example, my blind guardian dvd: BLIND_GUARDIAN AC3 T01 3_2ch 448Kbps DELAY 0ms.mp3)
This file is the mp3 version of your DVD, you can burn it with Nero as an Audio CD.
Maybe you have to cut the mp3 a little bit (Nero wave Editor) also you can cut the mp3 to seperate tracks.